From:	"Andrew Crabtree" <andrewc AT rosemail DOT rose DOT hp DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Volatile
Date:	11 Aug 1997 16:44:46 GMT
Organization:	Hewlett-Packard
Lines:	11
Message-ID:	<01bca675$cce25260$45111d0f@p1675cra.rose.hp.com>
References:	<199708061619 DOT AA241634394 AT typhoon DOT rose DOT hp DOT com> <5sbq8s$jjd AT freenet-news DOT carleton DOT ca> <5sesa1$9sl$1 AT horus DOT mch DOT sni DOT de>
NNTP-Posting-Host:	p1675cra.rose.hp.com
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

> 
> There are library functions under UNIX for handling of shared memory and
semaphores, 
> does any on know wether DJGPP supports these facilities??

I wrote me own busy-wait semaphore code in NASM for use use in DJGPP.  Its
pretty trivial, just about 10 lines 
of code.  Take a variable, then do a 'bts' or 'btr' on it and a 'jc' to the
prior instruction.
   Its one of the programming examples in Intels old 386 handbook.

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